The species named Fejervarya nicobariensis in the 2004 and 2006 IUCN Red Lists of Threatened Species was in fact Hylarana nicobariensis. The true Fejervarya nicobariensis was inadvertently omitted from the 2004 and 2006 IUCN Red Lists. The validity of the species was affirmed by Dubois and Ohler (2000).

Justification:
Listed as Endangered because its Extent of Occurrence is less than 5,000 km2, its distribution is severely fragmented, and there is continuing decline in the extent and quality of its habitat.

This species is largely restricted to the grassland habitat, where they have been observed breeding in the rainwater puddles (S.P. Vijayakumar, pers. comm.). A few individuals have been observed in littoral zone, but there are greater encounter rates in grassland (S.P. Vijayakumar, pers. comm.). On Car Nicobar Island, it also occurs coastal wetlands (both pre- and post-tsunami) and along newly cleared forest trails (S.P. Vijayakumar, pers. comm.). It presumably breeds by larval development.

The recent initiative to plant coconut trees in the preferred grassland habitat of this species could pose a serious threat to this species (S.P. Vijayakumar, pers. comm.). It is one of the frog species that survived the tsunami in late 2004 (S.P. Vijayakumar, pers. comm.).

It is not known from any protected areas, and measures are needed to conserve its habitat, in particular in the face of expanding coconut plantations. Further research is needed to determine its threats and conservation needs in more detail.